/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb.db.protocol.influxdb.meta;

import java.util.Map;
import java.util.Set;

/**
 * used to manage influxdb metadata
 */
public interface IInfluxDBMetaManager {

    /**
     * recover the influxdb metadata
     */
    void recover();

    /**
     * get field orders
     *
     * @param database    database of influxdb
     * @param measurement measurement of influxdb
     * @param sessionId   session id
     * @return a map of field orders
     */
    Map<String, Integer> getFieldOrders(String database, String measurement, long sessionId);

    /**
     * generate time series path for insertion
     *
     * @param database    database of influxdb
     * @param measurement measurement of influxdb
     * @param tags        influxdb tags
     * @param fields      influxdb fields
     * @param sessionID   session id
     * @return series path
     */
    String generatePath(
            String database,
            String measurement,
            Map<String, String> tags,
            Set<String> fields,
            long sessionID);

    /**
     * get tag orders
     *
     * @param database    database of influxdb
     * @param measurement measurement of influxdb
     * @param sessionID   session id
     * @return a map of tag orders
     */
    Map<String, Integer> getTagOrders(String database, String measurement, long sessionID);
}
